Sash fastener



H. S. DUNBAR.

SASH FASTENER- APPLICATION FILED DEC-20,1920.

1,419,128. Patented June 13, 1922.

UNITED STATES PATENT OEFIQE.

HARRY S. DUNBAR, 0F CLEVELAND, OHIG.

SASH FASTENEB'.

Application filed December 20, 1920.

To all whom it may concern Be it known that I, HARRY S. Duncan, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain. new and useful Improvements in Sash Fasteners, of which the following is a specification.

This invention relates to a safety-catch or fastener for windows, and it has for its primary object the provision of a fastener that is eflicient for looking a window when the said window is entirely closed, or when open any distance for ventilation or other purposes.

A further object of the invention is to provide a fastener that is simple in construction, that comprises few parts, and that is easy to assemble, therefore making it economical to manufacture.

A further object is to provide a fastening device that can be easily installed and manipulated, and that is absolutely reliable in operation.

With these objects and apparent advantageous features in view, the present invention consists in the construction, combination and arrangement of parts as hereinafter described and pointed out definitely in the ap pended claims, reference being had to the accompanying drawings which are made part of the specification, similar reference characters being employed to designate corresponding parts.v

In the drawings Figure 1 is a fragmentary elevation showing the application of the improved fastener.

Fig. 2 is a section through the meeting rails of a window, showing the fastener in position with the window locked closed.

Fig. 3 is a section through the fastener housing on line 3-3 of Fig. 4, showing the tumbler member in elevation.'

Fig. 4 is a top plan view, and Fig. 5 is an end view of the fastener.

The present embodiment of my improved fastener includes three elements, a supporting bracket, a locking tumbler, and a pivotal connecting member. The bracket 1 provides a housing for the tumbler and is of channel formation, having two lateral elements 1", and a base 1 The tumbler 2 is pivotally suspended in the housing 1 between the elements 1 on a screw or bolt 3. Said tumbler is substantially of the shape shown, having a hub 2 and an extending arm provided Specification of Letters Patent.

Patented June 13, 1922.

Serial No. 431,903.

with a circular peripheral face 2", said face being formed eccentric to the pivotal center, and extending outward beyond the end 1 of the bracket 1.

In practice the ass mbled fastener is firmly attaci ed to the top or meeting rail 4- of the lower window sash S in vertical alin-ement with one of the side rails 5 of the upper sash S. In the present embodiment the attachnient is made by screws 6 passing through counter-sunk holes 1 in the base l and penetrating the rail 4-. The device is so positioned in correlation to the window sash. that when the. tumbler 2 is in normal position the peripheral face 53 bears on the rail 5 and provides a clearance between the tumbler and the bottom of the housing 1, as shown at 1, Fig.

It will readily be seen that the amount of clearance is regulated by the transverse correlative position of the device, due to the eccentricity of the sash-contact face of the tumbler. It is also evident that when the device is installed as shown in Fig. 2, any appreciable downward movement of the upper sash, or upward movement of the lower sash is prevented, owing to the eccentricity of the tumbler 2 which causes it to bind on the rail 5. Therefore the sash can be fastened in any desired relative vertical position, as the tumbler being pivoted in the fixed bracket 1 can be manipulated or raised free from contact with the rail 5, as shown by dotted lines in Fig. 2. The sash can then be raised, or lowered as desired, the tumbler being manually held out of engagement while the sash adjustment is being made. When the desired relative vertical adjustment of the sash has been accomplished the tumbler is released and it automatically looks the two sash through the binding function.

I prefer to cover the contact-face of the tumbler with a shoe 7 of rubber, felt, or other material which provides for the friction function without abrasion of the sash.

A lip 1 turned, inward from one of the lateral elements 1. provides a stop which retains the tumbler 2 in condition for automatic operation. It will, however, be understood that the stop element maybe dispensed with without impairing the locking function of the device.

While the present embodiment provides a bolt for the pivotal suspension of the tumbler 2 in the housing 1, it is obvious that the member 2 could be provided with laterally extending trunnions, which operating in hearings in the housing, Would be an equivalent construction, and it will be understood that there may be other minor changes in the details of construction without departure from the spirit of the invention or the scope of the appended claims.

What I claim and desire to secure by Letters Patent, is.

1. A sash fastener comprising the co1nbination of an integral channel bracket attached to the top meeting rail of a window sash; a tumbler'pivotally suspended in said bracket and extending outward therefrom, the outer contour of the tumbler being eccentric to the pivotal center; pivotal means for said tumbler; and a lip on top of the bracket which limits the oscillation of the tumbler.

2. In a sash "fastener, the combination of a supporting channel bracket firmly attached to the meeting rail of a lower window sash; a tumbler pivotally suspended in said bracket; a bolt extending laterally through the bracket, on which said tumbler is suspended, said tumbler extending clear of the bracket, the outer contour ofsaid tumbler being eccentric to the pivotal center and provided with a friction shoe adapted to bind on the upper window sash; and a lip ontop of the bracket providing a stop for limiting the oscillation of the tumbler.

In testimony whereof I affix mv signature.

HARRY s. DUNBAR. 

